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Wu J, Huang H, Tu M, Yu H, Wei T, Huang X, Jia Y, Mo T, Li Y, Zhang H. Acute toxicological study: EZY-1 with potent therapeutic effects of idiopathic pulmonary fibrosis and its mechanisms. J Food Biochem 2022; 46:e14483. [PMID: 36226766 DOI: 10.1111/jfbc.14483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 01/14/2023]
Abstract
EZY-1 is an antifibrosis peptide purified from Eucheuma. In this study, we explored the acute toxicology of EZY-1 and the signaling pathways involved in its antifibrotic role. The mouse model of pulmonary fibrosis was induced by bleomycin. Pathological changes in lung tissue could be effectively inhibited by EZY-1. Acute toxicity and cell proliferation tests indicated that EZY-1 had no apparent toxicity to mice and cells. We identified proteins that could bind directly to EZY-1 in vitro on the basis of liquid chromatography-tandem mass spectrometry and bioinformatics analysis. EZY-1 inhibited pulmonary fibrosis via Wnt/β-catenin, transforming growth factor (TGF)-β/Smad, phosphoinositide 3-kinase/protein kinase B/ mammalian target of rapamycin, and activator of transcription 3 and Janus kinase 2/signal transducer pathways. A transwell micropore experiment showed that EZY-1 could inhibit cell migration and invasion. Western blotting analysis on transforming growth factor-β1 (TGF-β1)-induced A549 pulmonary fibrosis cell model suggested that EZY-1 could downregulate p-Smad3 (Ser423/Ser425), Smad4, β-catenin, vimentin, and N-cadherin expression. ELISA showed that EZY-1 could inhibit collagen-I secretion. EZY-1 alleviated idiopathic pulmonary fibrosis (IPF) through regulating TGF-β/Smad pathways, epithelial-mesenchymal transition processes, and collagen secretion, which provides a potential foundation for theoretical development of EZY-1 as a potential drug against IPF. PRACTICAL APPLICATIONS: We isolated a new 16-amino-acid peptide derived from the polypeptide extract of Eucheuma, named EZY-1. In vitro and in vivo assays show peptide EZY-1 is safe. The EZY-1 peptide alleviates IPF at lower doses than pirfenidone. EZY-1 alleviated idiopathic pulmonary fibrosis (IPF) through regulating TGF-β/Smad pathways, epithelial-mesenchymal transition (EMT) processes, and collagen secretion, which provides a theoretical basis for the development of EZY-1 as a potential drug against IPF.
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Affiliation(s)
- Jun Wu
- Respiratory and Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China
| | - Hui Huang
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, China
| | - Mingjin Tu
- Respiratory and Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Huajun Yu
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Laboratory Animal Centre, Guangdong Medical University, Zhanjiang, China
| | - Ting Wei
- Respiratory and Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Xiaoqin Huang
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, China
| | - Yufang Jia
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, China
| | - Ting Mo
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, China
| | - Yuanqi Li
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, China
| | - Haitao Zhang
- Peptide and Protein Research and Application Key Laboratory of Guangdong Medical University, Zhanjiang, China.,Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, China.,Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, China
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Sun KL, Gao M, Wang YZ, Li XR, Wang P, Wang B. Antioxidant Peptides From Protein Hydrolysate of Marine Red Algae Eucheuma cottonii: Preparation, Identification, and Cytoprotective Mechanisms on H 2O 2 Oxidative Damaged HUVECs. Front Microbiol 2022; 13:791248. [PMID: 35531284 PMCID: PMC9069057 DOI: 10.3389/fmicb.2022.791248] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 03/10/2022] [Indexed: 01/02/2023] Open
Abstract
To screen, prepare, identify, and evaluate the activities of natural antioxidants for treating chronic diseases caused by oxidative stress. Two algal proteins, namely ZD10 and ZD60, precipitated with 10 and 60% (NH4)2SO4 were extracted from red algae Eucheuma cottonii (E. cottonii) and hydrolyzed using five proteolytic enzymes. The results showed that ZD60 played the most significant role in the enhancement of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH⋅) scavenging activity (25.91 ± 0.24%) among all protein hydrolysates. Subsequently, six antioxidant peptides (EP1-EP6) were isolated from the papain hydrolysate of ZD60 by ultrafiltration and chromatography methods. Their amino acid sequences were identified as Thr-Ala (EP1), Met-Asn (EP2), Tyr-Ser-Lys-Thr (EP3), Tyr-Ala-Val-Thr (EP4), Tyr-Leu-Leu (EP5), and Phe-Tyr-Lys-Ala (EP6) with molecular weights of 190.21, 263.33, 497.55, 452.51, 407.51, and 527.62 Da, respectively. Of which, EP3, EP4, EP5, and EP6 showed strong scavenging activities on DPPH⋅, hydroxyl radical (HO⋅), and superoxide anion radical (O- 2⋅). Moreover, EP4 and EP5 could significantly protect human umbilical vein endothelial cells (HUVECs) from H2O2-induced oxidative damage by increasing the levels of antioxidant enzyme systems including superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) to reduce the levels of reactive oxygen species (ROS) (60.51 and 51.74% of model group) and malondialdehyde (MDA) (75.36 and 64.45% of model group). In addition, EP4 and EP5 could effectively inhibit H2O2-induced apoptosis by preventing HUVECs from early apoptosis to late apoptosis. These results indicated that the antioxidant peptides derived from E. cottonii, especially EP4 and EP5, could serve as the natural antioxidants applied in pharmaceutical products to treat chronic cardiovascular diseases caused by oxidative damage, such as coronary heart disease, atherosclerosis, etc.
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Affiliation(s)
- Kun-Lai Sun
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Min Gao
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Yue-Zhen Wang
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Xue-Rong Li
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Peng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Bin Wang
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, China
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Pardo M, Shafer MM, Rudich A, Schauer JJ, Rudich Y. Single Exposure to near Roadway Particulate Matter Leads to Confined Inflammatory and Defense Responses: Possible Role of Metals. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:8777-8785. [PMID: 26121492 DOI: 10.1021/acs.est.5b01449] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Inhalation of traffic-associated atmospheric particulate matter (PM2.5) is recognized as a significant health risk. In this study, we focused on a single ("subclinical response") exposure to water-soluble extracts from PM collected at a roadside site in a major European city to elucidate potential components that drive pulmonary inflammatory, oxidative, and defense mechanisms and their systemic impacts. Intratracheal instillation (IT) of the aqueous extracts induced a 24 h inflammatory response characterized by increased broncho-alveolar lavage fluid (BALF) cells and cytokines (IL-6 and TNF-α), increased reactive oxygen species production, but insignificant lipids and proteins oxidation adducts in mouse lungs. This local response was largely self-resolved by 48 h, suggesting that it could represent a subclinical response to everyday-level exposure. Removal of soluble metals by chelation markedly diminished the pulmonary PM-mediated response. An artificial metal solution (MS) recapitulated the PM extract response. The self-resolving nature of the response is associated with activating defense mechanisms (increased levels of catalase and glutathione peroxidase expression), observed with both PM extract and MS. In conclusion, metals present in PM collected near roadways are largely responsible for the observed transient local pulmonary inflammation and oxidative stress. Simultaneous activation of the antioxidant defense response may protect against oxidative damage.
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Affiliation(s)
- Michal Pardo
- †Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Martin M Shafer
- ‡Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Assaf Rudich
- §Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - James J Schauer
- ‡Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Yinon Rudich
- †Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
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Setiawan B, Kania N, Nugrahenny D, Nurdiana N, Widodo MA. Subchronic inhalation of particulate matter 10 coal dust induces atherosclerosis in the aorta of diabetic and nondiabetic rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bgm.2014.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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